其他隐秘的功能包括阻止来电，电邮或闹钟，关闭手机背景灯和背景拍摄等等。
Stealthy functions include blocking incoming calls, emails & other alerts, turning off your backlight and background shooting.
技术局限性实例可能包括：要是你想创建一个能阻止特定来电的应用程序会怎么样呢？
Examples of technical limitations might include: What if you wanted to create an app that would allow you to block calls from a specific number?
未登记号码、来电提示和黑名单都曾试图解决这个问题，但仍然阻止不了你不想接到的来电。
Unlisted Numbers, Caller ID and do-not-call lists all tried to solve this problem, but these solutions still don't prevent unwanted calls.
这是因为不应该有任何应用程序可以阻止用户接听来电。
This is because no application should prevent users from receiving an incoming call.
而这个时候，我们可以安装“来电屏蔽”软件，来阻止这些不速之客。
This time, we can install the "call screening" software, to stop these uninvited guests.
它阻止选定的联系人的来电。
当系统有来电的时候，用以阻止程序执行其它功能。
At the time of a call into the system, to prevent an application from executing certain functions.
阻止讨厌的来电者：当您收到来自外面有人叫你的地址簿(即电话推销员了吗？)，你有一个选项来阻塞调用者。
Block Pesky Callers: When you receive a call from somebody outside your address book (that telemarketer again?), you have an option to block the caller.
阻止讨厌的来电者：当您收到来自外面有人叫你的地址簿(即电话推销员了吗？)，你有一个选项来阻塞调用者。
Block Pesky Callers: When you receive a call from somebody outside your address book (that telemarketer again?), you have an option to block the caller.
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